Brad Stanfield on Leucine
9 episodes · 9 references · 2022–2025
- Stanfield discusses leucine primarily as the key amino acid that activates mTOR and drives muscle protein synthesis. - He notes a caution that leucine (along with methionine) may be problematic amino acids, suggesting a longevity trade-off with mTOR activation. - No evidence of personal consumption, no dosing guidance, and no specific supplement recommendations discussed.
Benefits
- Leucine is an essential amino acid that plays a pivotal role in initiating muscle protein synthesis and maintenance. - Protein intake, particularly leucine, powerfully activates mTOR, the cellular sensor for amino acids, glucose, and growth factors. - Stanfield describes leucine as critical for muscle building, with mTOR helping cells build proteins in response.
Cautions
- Stanfield flags leucine and methionine specifically as potentially problematic amino acids, distinct from protein in general. - The concern implies excessive mTOR activation from leucine-rich diets may conflict with longevity goals. - This suggests a trade-off between leucine's muscle-building benefits and its role in accelerating aging pathways.
“...mTor is a sensor that detects the availability of amino acids, glucose, and growth factors. And it's particularly responsive to the amino acid leucine.”
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